1923] NATURAL SCIENCES OF PHILADELPHIA 
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Height 14.6 diam. 24.3 mm. Station 104. 
PAR te aati 88 eh 
At Station 99, a half mile west of 98 and higher, 2 miles east of 
Little Robles Ranch house, the diameter runs from 19 to 22.3 mm., 
and the penis-papilla is shorter than usual and smooth, Plate V, 
He. 7. 
Specimens from the Black Table-top mountain in the eastern 
edge of the Roskruge Range, Station 104 on the south side and 
Station 105, east side, overlooking the Indian village of Cocorague 
are typical in form, running from 21 to 24 mm. diameter. 
Rosies Hits, outliers of the Roskruge Range eastward. 
Stations 91-95, at the dolomite quarry and northeast side of same 
hill, and north and east sides of middle hill, all in malpais. Shells 
rather small, compact, rather solid, the parietal callus generally 
thickened with a thickened edge. 
Height 11.8, diam. 20 mm., 43 whorls. Station 92. 
ey CB i talaga ta tion G2. 
Nib, Waliguooce (or meee ocere’ ct 93. 
Genitalia (Plate V, fig. 10, Station 93) typical except that the 
penis-papilla is deeply wrinkle-pitted, as in Coyote group forms. 
Measurements follow: 
HAS ETUST EDT eT gi (Cha aa eh J le Se ea 118080 118084 
BeneeMiot pense, kee otis ys Ls 11.5 mm. 12.3 mm. 
‘ Ppa. Me Mees eh, dae aS Sue Ge 
“s Pepi liallnset os Ue A ee as ae as S24 sargt 
- eepenial retractor’. oe 4c, 4244 és: Gree 
3 Pe WARM Ss niet ees ee ae te ee Voss 
ih ‘‘ spermatheca and duct ....... 57 Ppa 
SUE EIS 11 MeO lle: Rw OOM OR ee ed 93 104 
LeTENRO) NIB aire A UA Ua nee be et 10 12 
Coyotr Ranex.—Collections were made in the main canyon 
opening east, bounded on three sides by high granite walls and 
four dome-like peaks on the southwestern wall. At the western 
head there are springs, piped to the abandoned Zechendorf ranch. 
The Cavalla mining camp is at the west spring. Stations 111-113, 
115, 116, 118, and the Rehn and Lutz station, are in this canyon. 
Stations 114 and 117 are in the rincon between the Baboquivari 
and Coyote mountains and Kitt’s Peak, as shown on the sketches, 
figs. 5 and 6. 
The special characteristics of Coyote specimens of S. ambigua 
are the large size of the shell and, in alcoholic specimens, the deeply, 
